package com.andy.interceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import com.andy.vo.ExamUserVO;

public class LoginInterceptor implements HandlerInterceptor {

	@Override
	public void afterCompletion(HttpServletRequest arg0,
			HttpServletResponse arg1, Object arg2, Exception arg3)
			throws Exception {
		System.out.println("---------------- LoginInterceptor.afterCompletion() -------------------");
	}

	@Override
	public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1,
			Object arg2, ModelAndView arg3) throws Exception {
		System.out.println("---------------- LoginInterceptor.postHandle() -------------------");
		
	}

	@Override
	public boolean preHandle(HttpServletRequest request, HttpServletResponse response,
			Object arg2) throws Exception {
		HttpSession session = request.getSession();
		ExamUserVO examUser = (ExamUserVO) session.getAttribute("examUser");
		if (examUser != null) {
			return true;
		} else {
			response.sendRedirect(request.getContextPath() + "/login");
		}
		System.out.println("---------------- LoginInterceptor.preHandle() -------------------");
		return false;
	}

}
